Coal and slate separator.



No. 644,l77. Patented Feb. 27, I900. M. J. KERRIGAN. COALAND SLATE SEPARATOR.

(Application filed. June 1, 1899.)

(No Model.)

W Ha QF tlllli WITNESSES;

ATTORN EY.

ED STATES PATENT Enron.

MARTIN J. KERRIGAN, OF STOCKTON, PENNSYLVANIA, ASSIGNOR OF ONE- IIALF TO CHARLES MCDONALD, OF INILKES-BARRE, PENNSYLVANIA.

COAL AND SLATE SEPARATOR.

SPECIFICATION formingpart of Letters Patent No. 644,177, dated February 27, 1900. Application filed Tune 1,1899. Serial No. 719,026. (No model.)

To all whom it may concern.-

Be it known that I, MARTIN J. KERRIGAN, a citizen of the United States, residing at Stockton, in the county of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Coal and Slate Separators and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention is in the nature of a machine for separating slate from coal.

I-Ieretofore considerable difficulty has been encountered in separating slate from coal as it comes from the crusher at the mines, and many devices have been tried for accomplishing this work with varying success. The coal is frequently passed through several processes before the slate is completely removed, the slate thus increasing the cost, as well as the quantity of dust and waste, due to crumbling and grinding together during the repeated handlings.

' The object of my invention is to provide an improved machine for quickly and efficiently separating the coal and slate, such machine to be simple, strong, durable, and reliable in operation and results.

IVith this object in view my invention consists in the improved construction, arrangement, and combination of parts hereinafter fully described and afterward specifically pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a perspective View of a machine constructed in accordance with my invention. Fig. 2 is a longitudinal vertical sectional View of the same.

Like letters of reference mark the same parts in both the figures.

Referring to the drawings by letters, A indicates the bottom, B the rear end, and O O the sides, of the open-top frame of the machine, the front being also open and an inclined plate D being provided, extending backward or inward and upward between the sides 0 C from the forward edge of the bottom A. V

E indicates a shaft journaled in bearings in the sides 0 O and carrying a cylinder F, the heads G of which are of greater diameter than the body. In the projecting outer edges of the cylinder-heads are secured rods H, ex-

tending longitudinally along the outside of the body of the cylinder, upon which are pivotally and loosely mounted blades I, reaching from head to head.

J J indicate guard or deflecting bars secured to the inner faces of sides 0 G and reaching from about the inner end of the inclined plate D, concentric with the cylinder and at a distance from the periphery thereof somewhat less than the width of the blades I above and about two-thirds of the distance around the cylinder. These bars J overlap the ends of the blades I and beinglocated,as before stated, at a distance from the cylinder less than the Width of the blades all blades under the bars will be prevented from assuming radial posi tions' and held in tangential positions, as shown.

' Above the frame of the machine and secured in any-suitable manner is an inclined chute or trough K, upon which the coal from the crusher mixed with slate drops, and this trough, sufficiently inclined for the purpose, causes the mixed coal and slate to drop on top of the cylinder and blades I.

The arrow in Fig. 2 indicates the direction in which the cylinder is rotated by means of anysuitable power communicated through pulley L, belt M, pulley N on shaft 0, and pulley P with belt Q from any suitable motor or shaft.

The crushed coal and slate (indicated at R) will be fed at aproper speed to drop off the end of the chute K in a single layer, more or less continuous, so that everylump of coal and sliver of slate will come in contact with the outer edges of the blades I, so that the coal, being too large to lodge between the blades, will tumble over them down upon and over the inclined plate D into any suitable receptacle; but the slate, being in small flat plates or slivers, will lodge between the blades or plates which form pockets and be retained therein as long as the plates are passing under the bars J J, which will be to a short distance beyond the upper edge of plate D, preventing the slate from sliding over plate D with the coal. Dust and other small refuse fed to the separator with the coal and slate will also lodge with the slate in pockets formed between the blades, which when they pass from under bars J J will fall to a vertical position, dropping the slate and refuse at a point beyond the discharge for the coal in a pile in the bottom of the machine, as at S, Fig. 2, or in any suitable receptacle or conveyer to remove it out of the Way.

The advantages attending the use of my invention will be apparent from the foregoing description, and while I have specifically described and illustrated what I deem the preferred form I desire it to be understood that many slight changes might be made in such forms without departing from the spirit and scope of my invention.

Having thus fully described the construc tion and operation of my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

1. The combination in a coal and slate separating machine of a rotative cylinder provided with parallel longitudinal pivoted blades means for holding the blades in backward tangential positions during part of each revolution, and a chute for dropping crushed coal and slate upon the edges of the blades, the blades forming the pockets adapted to receive the slate and carry the same past the point of discharge for the coal, substantially as described.

2. The combination in a coal and slate separating machine of a rotative cylinder provided with longitudinal blades loosely pivoted at its periphery on axes parallel with that of the cylinder and means for holding the blades in backward tangential positions during part of each revolution, the blades forming pockets to receive the slate and carry the same past the point of discharge for the coal, substantially as described.

3. The combination in a coal and slate separating machinepf a rotative cylinder provided with longitudinal blades pivoted at its periphery on axes parallel with that of the cylinder, means for delivering the mixed coal and slate on the cylinder and guard or deflecting bars for holding the blades in tangential positions during part of each revolution, of the cylinder, the blades forming pockets adapted to receive the slate and carry the same past the point of discharge for the coal, substantially as described.

4. The combination in a coal and slate separating machine of a rotative cylinder provided with longitudinal blades loosely pivoted at its periphery on axes parallel with that of the cylinder, guard or deflecting bars secured to the frame overlapping and holding the blades in backward tangential positions for part of each revolution of the cylinder, a chute above the cylinder for discharging the coal and slate on the exposed ends of said blades while thus held, and an inclined plate below the cylinder for receiving the coal, the blades forming pockets adapted to receive the slate and carry the same past the point of discharge for the coal, substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

MARTIN J. KERRIGAN.

Witnesses:

ll/IICHAEL CANNON, R. LAURA CANNON, 

